Check-valve.



No. 720,100. PATENTED FEB. 10, 1903. W. B. M. BASHLIN.

CHECK VALVE.

APPLICATION FILED FEB. 2e, 1902.

N0 MODEL.

UNITED STATES PATENT OFFICE.

WILLIAM B. M. BASHLIN, OF WARREN, PENNSYLVANIA, ASSIGNOR TO THE BASHLIN COMPANY, OF WARREN, PENNSYLVANIA.

CH EC K-VALVE.

SPECIFICATION forming part of Letters Patent No. 720,100, dated February 10, 1903. Application filed February 25, 1902. Serial No. 95,513. (No model.)

To aZZ whom it may concern.-

Be it known that I, WILLIAM BVM. BASH tion, such as will enable others skilled inthe art to which it appertains to make and use the same.

This invention relates to check-valves; and

it consists in certainimprovements in the construction thereof, as will be hereinafter fully described, and pointed out in the claims.

The invention is illustrated in the accompanying drawings, as follows:

Figure 1 is a top view of the valve as shown in Fig. 2. Fig. 2 is a section on the lines 2 2 in Figs. 1 and 3. Fig. 3 is a bottom view of the valve as shown in Fig. 2. an alternative construction of the valve-seat and packing-ring. Fig. 5 shows the preferred construction of the valve-seat and packingring.

This check-valve is peculiarly adapted, except as to the means of rotating the valve, to a union-joint and is so shown and claimed. This comprises the body A, having the screwthread a for connecting with the pipe and the screw-thread a for the nut O of the unionjoint. The nut C is provided with an internal thread c for engaging the thread a and 'the flange-shoulder c for engaging the hub B in the usual manner. The hub B is provided with the internal screw-thread b for connecting with the pipe. The hub is also provided with the usual annular shoulder 19, which is engaged by the flange c. The body 0 is provided with the guides or contact-pieces a, and within the cage formed between these pieces and the hub B is placed the'valve deviceas shown the ball D. The contactpieces a, being arranged on a slant or spiral 5 to the direction of movement of the ball, ro-

tate the ball as it reciprocates when being opened and closed, so that the position of the Fig. 4 shows ball is constantly changed, thus making it wear evenly.

I prefer to provide the removable seat E, having the flange e, which forms the packing for the union-joint. This flange also holds the seat in place. The seat has the beveled shoulder e, which fits in the beveled groove a v in the body. By making this beveled the seat can be readily removed when desired. With this construction by a very little additional expense a union may be formed into a check-valve with a removable seat. The spiral contact-pieces of course are applicable to any cheek-valve. I prefer that the flange 6 should be corrugated; but the flange may be formed as the flange e in Fig. 4.

What I claim as new is- 1. In a check-valve, the combination of the body, hub and nut forming a union-joint; a valve device arranged in one of the parts of the union; and a seat for the valve having a flange forming a packing for the union.

2. In a check-valve, the combination of the body, hub and nut forming a union-joint; a valve device arranged in the body of the union; a seat for the valve having a flange forming a packing for the union, said seat being locked in place by the assembling of the joint.

3. In a check-valve, the combination of the body, hub and nut forming a union-joint; a valve device arranged in one of the parts of the union; and a seat for the valve having a corrugated flange forming a packing for the union.

'4. A check-valve comprising a ball-valve, and contact-pieces arranged at a slant or -spiral to the direction of movement of the ballvalve to rotate said ball-valve.

5. In a check-valve, the combination of the body A; the hub B, having the shoulder b; the nut C, screwed on the body portion and having the flange c, for engaging the shoulgo der b; the seat E, engaged by the body and hub and forming a packing between said parts; and the ball-valve D, arranged in the body portion and operating upon said seat.

6. In a check-valve, the combination of the corrugated flange between the hub and the body A, having the spirally-disposed contactbody of the union. :0 pieces a, and a beveled groove a the ball- In testimony whereof I affix my signature valve device D, arranged within said contactin presence of two witnesses.

5 pieces; the nut 0, having the shoulder c; the WILLIAM B. M. BASHLIN.

hub B, having the shoulder b engaged by the Witnesses: shoulder c; the seat E, having the beveled JUSTIN P. SLOCUM,

shoulder e, fitting in the groove a; and the H. O. LORD. 

